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Processing method and device for TV signal deinterlacing

A TV signal and processing method technology, which is applied in the field of signal processing, can solve problems such as the inability to ensure that there is no error in direction judgment, and does not have very clear directionality, so as to achieve the effect of improving the level of precision and accurate pixel values

Active Publication Date: 2019-01-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) When hardware resources are limited, for example, when there are only two lines of data in the vertical direction (1 line of linebuffer), almost all algorithms cannot guarantee that there is no possibility of error in direction judgment, and some details even if the data is enough For a long time, it is still not possible to perform good interpolation through direction judgment, because some details do not have a very clear directionality (such as some corners of text)

Method used

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  • Processing method and device for TV signal deinterlacing
  • Processing method and device for TV signal deinterlacing
  • Processing method and device for TV signal deinterlacing

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Embodiment 1

[0076] see figure 1 , figure 1 It is a flow chart of a TV signal deinterlacing processing method provided by an embodiment of the present invention. Such as figure 1 As shown, the method includes:

[0077] Step S101, judging whether the pixel to be interpolated is in the strong static mode; if yes, execute step S102, if not, execute step S103;

[0078] Specifically, with the pixel to be interpolated as the center, a first window is selected, and the first window includes at least two rows of pixels with known pixel values, and the distance between each pixel of each row and the corresponding position of the previous frame is sequentially judged. Whether the sum of the absolute values ​​of pixel value differences between pixels is less than the preset threshold value of each row; and centering on the second pixel point, select a second window, which includes at least one row of known pixel values The pixel points of each row are sequentially judged whether the sum of the ab...

Embodiment 2

[0123] In order to describe the technical solution of the present invention more comprehensively, the present invention also discloses a processing device for deinterlacing television signals.

[0124] see Figure 5 , Figure 5 A structural diagram of a television signal deinterlacing processing device provided by an embodiment of the present invention. Such as Figure 5 As shown, the device includes:

[0125] A judging module 501, configured to judge whether the pixel to be interpolated is in a strong static mode;

[0126] The first processing module 502 is configured to acquire the pixel value of the first pixel corresponding to the pixel to be interpolated in the previous field when the pixel to be interpolated is in a strong static mode, and supplement the pixel to be interpolated The pixel value of the point, the pixel value of the pixel point to be interpolated is equal to the pixel value of the first pixel point;

[0127] The second processing module 503 is configu...

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Abstract

The invention relates to a television signal de-interlacing processing method and device. The method includes the following steps that: whether pixels to be interpolated are in a strong static mode is judged; if the pixels to be interpolated are in a strong static mode, the pixel values of first pixels in the last field which are corresponding to the pixels to be interpolated are obtained, the pixel values of the pixels to be interpolated are supplemented, so that the pixel values of the pixels to be interpolated are equal to the pixel values of the first pixels; if the pixels to be interpolated are not in a strong static mode, gradient zones in a plurality of directions are divided with the pixels to be interpolated adopted as a center, and the directivity of the pixels to be interpolated is determined according to the gradient zones, and the pixel values of the pixels to be interpolated are supplemented through interpolation along the direction of the pixels to be interpolated. With the method provided by the technical schemes of the invention adopted, the accuracy of the pixel values of the pixels to be interpolated can be effectively improved.

Description

[0001] This application claims the priority of a Chinese patent application with application number 201410854341.5 and titled "Processing Method and Device for Deinterlacing Television Signals" filed with the State Intellectual Property Office of China on December 31, 2014, the entire contents of which are incorporated by reference in this application. technical field [0002] The invention relates to the technical field of signal processing, in particular to a method and device for processing television signal deinterlacing. Background technique [0003] Interlaced scanning is a common form of TV signals. After the TV signal is interlaced in the order of top field and bottom field, the adjacent (adjacent) top field data missing half of the data and bottom field data missing half of the data are combined together. The frame becomes an interlaced video stream, but such a video stream has an interlaced effect. Therefore, de-interlacing of TV signals is an inevitable requireme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/01
CPCH04N7/012H04N7/0147
Inventor 周鸿韦虎罗小伟王森陈敏杰朱俊薛端林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD